The winning Connecticut Play4 numbers for May 15, 2021 were: day 8-6-3-8; night 0-8-1-3.
Sum is the digits added together (5+5+0 = 10). Root sum keeps adding until one digit is left (10 → 1+0 = 1) — many regular players track it in their notebooks. Odd/Even marks each digit O or E (5-5-0 = OOE). High/Low marks 0–4 as L and 5–9 as H (5-5-0 = HHL).
Sum is the digits added together (5+5+0 = 10). Root sum keeps adding until one digit is left (10 → 1+0 = 1) — many regular players track it in their notebooks. Odd/Even marks each digit O or E (5-5-0 = OOE). High/Low marks 0–4 as L and 5–9 as H (5-5-0 = HHL).
| Date | Draw | Numbers | Sum | Root |
|---|---|---|---|---|
| May 15, 2021 | Night | 0-8-1-3 | 12 | 3 |
| May 15, 2021 | Day | 8-6-3-8 | 25 | 7 |
| May 14, 2021 | Night | 7-9-2-0 | 18 | 9 |
| May 14, 2021 | Day | 5-0-5-4 | 14 | 5 |
| May 13, 2021 | Night | 3-1-6-8 | 18 | 9 |
| May 13, 2021 | Day | 9-6-0-7 | 22 | 4 |
| May 12, 2021 | Night | 4-9-2-5 | 20 | 2 |
| May 12, 2021 | Day | 7-4-8-9 | 28 | 1 |
| May 11, 2021 | Night | 4-5-4-0 | 13 | 4 |
| May 11, 2021 | Day | 3-5-9-6 | 23 | 5 |
| May 10, 2021 | Night | 7-6-1-6 | 20 | 2 |
| May 10, 2021 | Day | 5-5-5-5 | 20 | 2 |
| May 9, 2021 | Night | 3-7-0-5 | 15 | 6 |
| May 9, 2021 | Day | 7-3-4-2 | 16 | 7 |